Belt fastener



1.1. B. J. BOVY (NICOLAASZOON).

BELT FASTENER.

APPucATmN F!LED1uLY25,1919.

Patented Sept 26, 1922.

2 SHEETS-SHEET l.

Il' l lll 4 fn@ (gy/ #graff 1.1. B. 1. Bom/Y (NICOLAASZOON).

BELT FASTENER.

APPLICATION FILED JULYZS. |919. l 1,430,21 1. Patentedsept. 26,1922.

2 SHEETS-SHEET 2.

f5 19 ff o To allfwliom benny-concern;

belt fasteners. The lnumerous Patented Sept. 26, 1922.

UNlTEnsTATEs "NETHERLANDS,

aAooBUs JOHANNES BnRNAnDus .iosnrniisk iso'i'ivvl (mooLAAszooN), on DORDRECHT,

'BELT FAST-Enna Application ,med July a5,

1 Be it` known that .1,.JAooBUs JoHivivns BEigNARDUs JosErHUs lands, residing jat Dordrechhthe vrNetherlands, have invented certain new anduse ful 'improvements yor Relating tojBelt Fasteners, ofwhichthefollowing is aspeoification.

' isrfatathese weakened parts that the whole powerto be transmitted byzthe belt` comes into play, so that `frequent ruptures ofthe belt occur at theseplaces'where the bolts are. As, for every.4 new connectionqit lis nec essary to out off a piece of the belt, thebelt 'getscontinually shorter sothatin the end it becomes useless.

The aforementioned disadvantage l.en-.

tirely eliminated bythe new improved belt fastener, which consists of two/ pairs of pin- -cers, connected togetherby a ymovablev connecting piece, .the gripping. jaws of said pinoers engagingthe ends ofthe belt. .The

' width of the gripper arms, i; e., the distance separating the same may be The holes, 'wliichf inrthe'A regulated by means of a stretching deviceuw y 'f beltk fasteners adopted hitherto usuallyhad to be made with great accuracy byvmeans of special tools, are avoided in the improved belt fastener as well as the tools used for this pur- `pose, so that atearing of the belt is consequently obviated;A

The .improved belt fastener is very simple in construction and can be mounted and removed very rapidly, whereasowing to its greater flexibility itcauses niucliless wear of the belt than is the case with` other forms of belt fasteners. u

` Another feature ofthe improved belt fastener is that 'the gripper yarms. of 4the l nowv keffected in the following manner pincers are connected by `a lockingl.bolt,ithe grippers being so shaped as to engage fully the ends of the belt, for which 'purpose they are provided, eithery only; at their `ends or BovY (Nicolaas-- zoon), a subject` of the Queen of theNethel-` the arrow. f f

in the drawings the improved belt fastener consistsof two identical pairs ofjpincersl, each pair comprising two grip#` i919. yserial No. 313,135.y

over the entire contact surface, withteeth or the like. i i

Accordingf tol .another fform\ :of ,the irnvproved vbelt fastener each pair fof ,pincers is Lcomposed of two; interengaging stampings,

ythelocking boli/:being `in this formenclosed bothpat the top as well asythe bottomby the *free parts. of4 the'y armswhich: are bent .towards one another.;v i f y Several formsof lcarrying this invention finto eect are shown bywayQfeXamPle inthe accompanyingy drawings, Iin which,

`,"Fig 1 isa side elevationof thenew belt y fastener,

y Fig. 2 aplan view, i Fig. 3 a side elevation of a modifiedforin ofthe'improved belt fastener,

f Fig 4 a planview thereof,

-Figs 5 and 6 views Vof separate details, Fig. `a side elevationofa further modi- .'ied form ofthe new. belt fastener,

The left` half of Fig. 8 an inverted plan and'therighthandwhalfof the same figure f' an ordinary plan view,

Fig. 9 ajseotionalong the liner C`-D in Fig.7, and

`8, as seenwhen looking in the direction of 'As shown ping vjaws or grippers 2, and two arms 3,

which .are `pivotally mountedl -in the 'usual f way on'a journal 4. I Those parts of the said 4grippers which' engage the belt are enlarged and are provided ony their ends with sharp knife edges 5 yor'with teeth. The grippers for, the underside fof the belt aresmaller than those fory the upper. sidey thereof.k

TheV extremities ofthe` gripper arms are v.provided withf eyelets 6,"th rough ,which a bolt 7, canl pass, the heady 8, lof which 'is providedwitlr suitable'means' for preventing the bolt from turning, a nut 97 with a lock ,nut screwingonto the other end of the bolt.V yBetweenthe two bolts 7 a vconnecting piece 10, isl arranged, which as shownl inFig. y1,

takes the form of a shackle. y f.

The fastening of both ends oftliebelt is tween the bolts 7L and `furtherthat the nuts v so f Fig,y 10 a s ection on the flineA-B in Fig.

9 and their lock nuts of both pairs of pincers are unscrewedf on lthe bolt` 7*,tosuch `an extent `that"the yknife edges v5! are moved farther apart than corresponds to the width of the. belt. The knife edgesr4 are, then nfmie l`4 over the 'ends ofthe belt until fthe inner face of the grippers rests againstithe end of the belt as shown in Fig. .The nut 9, and its lock nut are nowtightened up so that the knife edges 5 penetrate into the material of the belt. Thus by tightening up`ory easing the nut 9 and its' lock nut to be strained-fon bending.

l'lavoid this'disadvantage the rjournal pin 11 can be supported at two places andthe force applied at the centre of the'journa-l. For this purpose the arms 4of the pincers 'can beshaip'ed asshown in Figs.L 5 and 6.

According to Fig. 6 the gripper 2y is further provided with a vlateral arm 1,1 which togetherwith the-.main arm of the gripper 2 is 'adapted 'to taketh'e journal '4.' The lowermost gripper is inthiscase' made "of Isuch dimensions that itcan be placed between? the Ina-in arm` Ofi the gripper v2,- vand the lateral arm 1 1 (Fig. 6) for the purposeofv formingpincers :on which the :journal may be riveted. v I

yIn the form' shown 1n Figs. 3 and 4: the grippers are vprovided with severalV rows of knife edges which also may take-itl'ievform ofteethl.- 'l

llt' is obvious that, instead* of knife edges orlteeth-the innerffaces ofthe grippers c an be formed 1 in any other suitable 4manner provided always that sufficient yfriction is set upl between thegrippers` and the ends ofthel belt so as yto p reventfthebelt from slippingl offy and becoming loose.

" ln'the'form shown `in'Figs.A @the pincers are composed of twoL grippers 12 and 13, stamped out from solid metal and bent. They. are secured Itogether-bymeans of a small stud 1&1; 'The pincer: halfv 13ff1ts inte the pincer half12 andv both are .providcfl with teeth 15 atlthenpoints where they en- '-.gage the belt.

The* end 18, opposite the belt is forkshaped (Fig. 9), the upper edge thereof being slightly inclined in a forward direction and adaptedto4 receive a nut 16, which locks a clamping bolt'l', connecting `the extremities of the pincers..y Theend 19 of the-member 12.` isso shaped that `the square part'120 of the bolt 17 is entirely enclosed .('see'right hand half of Fig. 9).

u .Et therefore l.appears from: the above that thee'nd of the arm 19. 18 and 19 a connecting piece 21, is arranged,

i twok connecting vplates 23-.`

way to that: shown in Fig. 1 and'.

r-therefrom. The extremity of the arm 18 can also be constructed in the same way as Between the arms the saidy piece `beingadapted to pivot and move up and down on a stud 22, riveted to Thevv clamping bolt17 passes through these connecting pieces 21. In order to adjustthe distance betweenthe connecting piece 21 andthe end of the armsfwasuhers 24Cl made of lrubber, leather orresilient" steel may be interposed. The form of the connecting plates-23 is clearly'shownin Figs. 8 to 10.

As described hereinbefore the pincers are made smaller at one side than atthe other.

The fastening device is applied in the following manner I f FirstV the nuts 16 are fully unscrewed, so that the pincers 12 'and 13 yare opened to such an extent thatthe belt can easily move between the teeth 15. After these .teeth have assumed'their proper position, the nuts 16 are screwed upto such anextent as to cause the teeth 15J-toA enter the material of l section `ofwhich@corresponds tothe `section ofthe belt, there will be only two narrow gaps in the'belt.

'f Insteadk of'` making the connecting piece `in ther form of a shacklethe ends of the bolts may also. beconnected-by a chain, a hook, a plate or .the like. The .headsv 8 of the bolts Z also may be screwedin anyother The lockingbolt itself may also-be replaced by a suitablev stretching device. That I' claim asmy inventionand desire to secure by Letters Patent is: i a f 1. A belt fastener comprising ltwo pairs of pin'cers connected togetheryby a movable connecting piece,.s:iid pincers having grip-v pers adapted to engage only tlie-.outsidesof the belt ends, and :arms the spacing apartof which can be regulated independentr of the belt tension.` .i

U2. 1n a belt yfastener,the:combination oftwo articulated gripping members adapted toy engagethe opposite Louter sides only .of .the belt, and clamping means connecting the other ends of said members. and adapted` to `oit each pair of pncers and hating its shaft enclosed and engaged by the forked 10 extremities of the gripper arms which are bent toward each other for this purpose.

In testimony whereof I have affixed my signature. f JACOBUS JOHANNES BERNARDUS JOSEPHUS BVYy (Nicolaaszoon.) 

